Here is the touch screen calibrator:
You should be able to flash like this using the two .bin files in this release:
python /home/merlin/Arduino/hardware/espressif/esp32/tools/esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_freq 80m --flash_mode dio --flash_size 4MB 0x1000 /home/merlin/Arduino/hardware/espressif/esp32/tools/sdk/bin/bootloader.bin 0x8000 /tmp/arduino_build_348719/fulldemo.ino.partitions.bin 0xe000 /home/merlin/Arduino/hardware/espressif/esp32/tools/partitions/boot_app0.bin 0x10000 /tmp/arduino_build_348719/fulldemo.ino.bin